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The Rear Panel:
5
Speakon
®
is a registered trademark of Neutrik AG.
21. CIRCUIT BREAKER: The B5R employs an AC line circuit
breaker to help protect against damage due to excessive current
demands. If the amplifier stops working, check the circuit break-
er. If it has opened, the button will be protruding and showing a
contrasting color. You can reset the circuit breaker by pushing it
in until it latches. The breaker must cool down for a short time
before the button will latch. If the circuit breaker opens repeated-
ly, have the amplifier checked by a qualified service person.
22. AC LINE IN: Firmly insert the supplied AC power cord into
this socket until it is fully seated. Plug the male end of the cord
into a grounded AC outlet. DO NOT DEFEAT THE GROUND
PRONG OF THE AC PLUG!
23. SPEAKER OUTPUTS: The 1/4” jacks offer a convenient
method of connecting to speaker cabinets using cables terminat-
ed with 1/4” plugs. However, when using the amplifier at or near
its full output power, using the Speakon
®
jack is recommended.
24,25. TRANSFORMER BAL. LINE OUT: These jacks supply a
pre-Master, line level signal for connection to a house mixing
board, recording console or external amplifier(s). The 1/4” jack
(24) provides a balanced or an unbalanced signal (depending on
the signal cable used); the XLR-type jack (25) provides a bal-
anced signal.
26. EFFECTS LOOP RETURN: When using external effects,
connect the effect’s output into this jack by means of a shielded
instrument cable.
27. EFFECTS LOOP SEND: When using an external signal
processor, connect this jack to the input of the effect by means of
a shielded instrument cable.
28. TUNER OUT: This jack is provided for connection to an elec-
tronic tuner and is always “live,” even when the Mute switch (3)
is engaged, allowing for “silent tuning” as well as a monitor feed
which remains active when the other outputs are muted.
29. POWER AMP INPUT: This jack connects directly to the
power amp for use with an external preamp. When using an
external source, connect the OUTPUT of the source to this jack
by means of a shielded instrument cable to feed the signal into
the power amp section. The internal signal is disconnected when
a plug is inserted.
30. PREAMP OUTPUT: This jack is a direct preamp output for
use with an external power amplifier, mixing board, external
effects, etc. Connect the external unit input to this jack by means
of a shielded instrument cable. Using this output does not break
the connection to the internal power amplifier.
31. OCTAVE/COMBINE FOOTSWITCH: Connect a two button
footswitch to this jack for remote control of the Octave and
Combine features. The tip connection controls the Octave fea-
ture and the ring connection controls the Combine feature.
32. CHANNEL FOOTSWITCH: Connect a single button
footswitch to this jack for remote channel selection.
22
21
23 29 30 31 32
24
25 26 27 28
B5R Bass Amplifier